Extension steering device



El j. SE'LL.

EXTENSION STEERING DEVICE.

APPLICATION HLED .IAN.!3.1920.

Patented July 20, 1920.

INVEHTOR vent-i011 'will appea in comlet on escpton of "the constuctsn am tion my device and with. @se Qbecs mentioned and others in view my in x12-tion c011- slsvts m 5h43 constuctwn, 'if a 1 poned Qu in my Claims and like accompanying; drawings@ in f iS i sul 1 Fi :e l Show u side eevfton of a selera QQLETO device emboaymg my inver@ 4 j is; bar lug?. L i; a deua, @Gcolm new *mk/ on ing fue me 12-5 ofg. l :sha 51g. I5 is dgtai "'ec-Iicni vi-ev m1 'me be line 3-2/ o fx l l Lb 1 S'M' v fo a wir: st'

d gram suppo J lic K post pi 3e? which 3. to be Tgidy mounted on da frame of a 1% have shown connected with Mounted Wi 'for a ormnv L his beang; may have a varejy 'of oms, m15: as ustated m the clra'wmgs, the upper end of he upmght l0 ls reduced at. l2 and clutch control meinher 36.

Q release ter parts being similar in eonstruction to thosedisclosed in.v my heretofore .identified prior application.

l may mention 1n this' connection' that my vpresent application )has do with the steering mechanism particularly, but this inechanisin is of course preferably used in eonnection with the other :features shown herein and 'in my prior application.

li/iy present invention embodies particuvla-rly an'uprightpost designed to niounted on the traetor, and a single relatively short steering shait member mounted at the upper end of said post for rotation, but held 'against either hori."ontal or vertical pivotal.

or swinging movement, togetherwithineans for operatively connectinglthe forward end 1 e y of said shortshate with said steering share, and also Atogether wltlna shai't connected with said short shaft at the rearvvard'end 'thereof4 hy a universal ioint, which latter shaft is connected with the steering 'Wheel and is held raised to a certain height horil Zent-ally by means of the brace 29, Which is so connected with the post l0 as to permit the shaft 22 and the brace 29 to swing treely horizontally, Which hraoe'is also so connected With-the shaft 2Q as to permit said shaft 'to' be raised, hat not to he .lowered below a certain point..

in providing an extension steering device haiviiieh the general purpose or' permitting a tractor to be -driven frornthe seat4 of another' machin'e, several important problems are inf volved. lt isvery desirable that the steering Wheel should be slipper-ted so as vto he convenient el ascesa 'to the driver seated on the seat, for

instance, otahinder drawn from the tractor.

Where the steering device is ot theexted sion type Aitis desirable that the Wheel should he supported by the 4mechanism whicl mounts the' steering device on the tractor, so as vto hold the Wheel at a certain height, and that the means for so supporting the rea-r end'oie the. steering mechanism and the Wheel shouldbe adjustable for properlysupporting the wvheel 'for use with Vdifferent 'kinds of machines such, for instance, as mowers or' hinders, corn harvesters and so on.

Another problem is involved in the V'tact that While the steering Wheel should he supported on the tractor independent of the hinder or the'lilreit also ymust have free v'movement with relation tothe forward por-- tion o-the'steering mechanism by means oi' All of these lat.

universal joint connects or otherwise, but to permit the'steering Wheel to remain close to the seat ot. 'the binder, for instance, when the tractor is inaling a turn, and must he able to move to a certain extent up and down 'for the reasons which Will' now be explained.

rhns another problem that must helmet arises from the fact that the rear'portion of the tractor', which supports the steering mechanism will, on account of inequalities in the ground, be raised or'lowered in the course of the use of the niachines With relation to the binder. lt will be .seen that it the back Wheels of the tractor should run over anelevation this Awould simply result in raising the steering Wheel which would do no damage. I

. On the .other hand if the back Wheels of the tractor should drop into a depression this ,would tend to drop the steering Wheel,

and if' the' steering' Wheel werel rigidly connected against. up and down movement, it

might strike the legs of the driver and 'canse serious injnry.

it will be seen, therefore, that if the steering' Wheel is connected by a series of uni- 'V versal joints or flexible connections with `steering shaft, and is not supported at a certain height hy means of the tractor alone,

then there must he provided some means for mounting' the steering Wheels on each addi? tional piece 'of machinery which may beemployed in orderto protect the driver from the contingency last mentioned.

0n the other hand if the steering Wheel i supported at "a, certainy height by means mounted on the tractor there must he somevvay providedfffor preventing the steering Wheel from drohping against the legso the driver and pinching therein 'the rna'nnerhereinbeiore mentioned.

rlhis danger is avoided in the present construction by using the brace 29 and' 'the sleeve 2S it makes it possible for the vdriver to hold on 'to he steering Wheel rand to hold it up in case the rear Wheels of the tractor should drop downwardly and tend to drop the. wheel at the sanie time.

Even if 'the drivershould not hold'the steering Wheel up and' .the steering Wheel should drop downwardlyand'strike his legs, it would not be hard to hold it rigidly hy the 'support on the tractor, and Whenit lniet with a resistance would swing upwardly on its pivot 'point Where itis connected with the sleeve 32, and the sleeve 28 would 'slide for Wardly from the collar 216 on the 'shaft 225 ltwill be seen. that all the other problems above enumerated have been mentioned by my present construction.

les

' Thel height at which the steering Wheelis supported may be readily regulated hy loosening the collar 26 on .the collar 30 and adjusting said collars or either of them.

-'The'steering- Wheel and the shafts con- .a tractor; stnntmlly honzontal posmon im' ota-tlon `with the steerng shaft of a tractor;

upright suppot designed to 'be mounted on a shot shaft. supported in Sub- On said npsght support; means for operatively connecting one end. of said short shaft a shaft connected by a universal joint with said short shaft; and means for Supporti-ng said Second shaft from Said nplgbt suppot folpermitting the second shaft to s fing nonzontally or vertically and *for lzntlng the downward swinging movement of Said sec'- ond shaft.

7. 1n a device of the class described; an upright support designed to be mounted on a meto; a short shaft supported in sub- Fstntadly horizontal poson foi* rotation on said upright support; means fol* operazvey connecting one end of' seid short shaft with thesteerng shaft of a traci'or shaft connected by a unvesn joint W seid short' shaft; and means for supporting se? second shaft' from said upright suppor for pemntng the second shaft to swing hozontaly o' vertically and for lmng the downward swinging ino-vement of said second shaft; Sa'id inea-ns being adjus'abe 'off varying the limit o such downward movement Des Moines, owa, Deeem'be 8', 1919 EDWARD J. SELLA. 

